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whatalnk/abc122-a.rb

Created April 15, 2019 09:39
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AtCoder ABC #122 A - Double Helix
Raw
abc122-a.rb
b = gets.chomp
base = {
"A" => "T",
"T" => "A",
"G" => "C",
"C" => "G"
}
puts base[b]
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